Issues

• Normative: Make tail-call optimization normative-optional to match web reality

  needs consensusnormative changeweb reality
  Unread
  tc39/ecma262#3957·gibson042 opened Aug 22, 2026 · Updated Sep 29, 2026
  13

• Implementations do not agree on ArrayBuffer construction step order

  web reality
  tc39/ecma262#3388 · Filter by author gibson042 opened on Aug 12, 2024
  2

• enforce some minimum accuracy bound for implementation-approximated values

  needs dataweb reality
  tc39/ecma262#3347 · Filter by author michaelficarra opened on Jun 6, 2024
  5

• Normative: specify web reality for Array.prototype.join with cyclic values

  normative changeweb reality
  Unread
  tc39/ecma262#1518·ljharb opened Apr 26, 2019 · Updated Apr 25, 2026
  17

• Consider defining a Realm (global) for all objects, not just Functions

  layeringneeds specification textweb reality
  tc39/ecma262#1333 · Filter by author bzbarsky opened on Oct 24, 2018
  14

• Runtime Semantics for MemberExpression do not conform to web reality(?)

  questionweb reality
  tc39/ecma262#1224 · Filter by author cpcallen opened on Jun 13, 2018
  7

• OrdinarySetPrototypeOf and the HTML spec

  layeringweb reality
  tc39/ecma262#683 · Filter by author saambarati opened on Sep 2, 2016
  43

• WindowProxy and violations of internal method invariants

  layeringweb reality
  tc39/ecma262#672 · Filter by author annevk opened on Aug 17, 2016
  18

• Analysis of how implementations handle the required escaping in RegExp#source

  web reality
  tc39/ecma262#578 · Filter by author claudepache opened on May 20, 2016
  2

• Add Function#caller and Function#arguments to Annex B

  web reality
  tc39/ecma262#562 · Filter by author claudepache opened on May 10, 2016
  59

• Reference type and implementation reality

  discussionneeds consensusweb reality
  tc39/ecma262#467 · Filter by author littledan opened on Mar 9, 2016
  21

• A.p.join on cyclic arrays does not reflect web reality

  normative changeweb reality
  tc39/ecma262#289 · Filter by author rossberg opened on Jan 15, 2016
  36

• Annex E incompatibilities should include "early Reference Error"

  editorial changeweb reality
  tc39/ecma262#257 · Filter by author saurik opened on Dec 16, 2015
  13

• Annex B: Specify non-standard RegExp static properties

  normative changeproposalweb reality
  tc39/ecma262#137 · Filter by author claudepache opened on Oct 28, 2015
  37